Richard c



R. C. LEAKE.

SIGNAL mmcmrm AND TRMN REPORTING ANSWER BACK SYSTEM.

APPLICATION FILED NOL. 23v 1915 1,355,055. Patented 05. 5,1920.

INVENTOR By Z A Tri /IE Y UNITED STATES; PATENT OFFICE.

RICHARD C. LEAKE, OF ROCHESTER. NEW YORK. ASSIGNOR T GENERAL RAILWAY SIGNAL COMPANY. OF GATES, NEW YDRK. A CGBPORATION 0]? NEW YORK.

SIGNAL-INDIGATING AND, TRAIN-REPORTI'P' ANSXVER-BACK SYSTEM.

355 55. Specification of Letters Patent. Patented ()ci. .1. 1920.

Application filefi November 23, 1915. Serial No. 62.983.

To all whom it may concern.

Be it known that I, RICHARD U. Limits, a citizen of the United States. and resident of the city of Roehester. in the county of Monselectors at the various way station and for receiving the answer back indications. The ltey and switch are shown hecause they are a simpler and more easily described means for roe and State of New York, have invented sending: the electric code impulses suita new and useful Signal-liulieating and able for controlling the selector contacts 'lrain-Reporting Answer-Back System. of at the several local stations than the calling which the following is a specification. keys preferably used and such as are de- This invention relates to signaling sysscrihed in l S. Patent No. lddofififigrantterns for railroads, and more particularly to ed \ugust 4th. 1914, to- Maurice l (leer apparatus and circuits adapted to be used in and Richard Leake. The letter (1, indieonnection with telephone train despatehing rates an insulated track section of a railsystems for controlling from a central staway track. The letters H. l. indicate other lion. or train despatchers ollicta signals and insulated track sections which are respecantoinatic train reporting devices at disti cly connected by pairs of wires j. j and 65 tant points along the railroad. 1. iv. with mechanisms grouped at other The ultimate objects sought and attained way stations J. K, and similar to those by this invention is to provide at reasonable shown. for track section (i. and which are cost of installation a system of mechanisms likewise in circuit with the telephone line or appliances which automatically provide l. The letter L. indicates a semaphore sigpractically all the facilities of a train order mil for track section G. Associated with station without the expense. of hnnlanagents each track section, as track section G. are or operators who may be dispensed with. two relays M and O. The relay 0, by reahence the invention may advantageonsly he son of the fact that it has as a principal adopted at any desired place or places along fnnction the control of a signal. is eonven- 7% a railway line where the expense of such iently termed the signal rolay and the re agent may prohihit their employment. lay N. because it has'as'a principal function The various objects and functions and adto control parts of the. system for report vantages of this invention will more fully ing trainnioven'ients. is conveniently termed appear in the following detailedd scription, the 8 relay. The expression 0 S f. and the novelty of the intention will be heing chosen because it has been common particularly pointed out in the appended practice in telegraph train despatchiiu to claims. report a train by sending in the Morse code Reference is made to the accompanying the letters (l S" followed by the train sheet of drawing forming part of this spccinumber. lication and diagrammatically representing. The answer wheel 1 is a toothed ring revth i ti n, olubly held by rollers 12. engaging its in- In the drawings. the letter i\ indicates ner track 25. which has a notch 4. into and generally the answer-ba k or signal sending out of which ride two insulating rollers 5, mechanism which includes an electroma 6, respectively secured to the free ends of nctic device or motor ll. The letter C ilnitwo conductive arms T. S. pivoted to two rates generally a polarized relay. hindingr posts 9, 10. An insulated conduc- The letter l). generally indicates a selectire contact ll. is disposed centrally within tor device. such as is shown and described the wheel 1. and is adapted to be engaged by in detail in U. S. Patent No. l.118.l2 either of two elastic contacts l2. 13, carried ganted November 24th. i914. to Maurice 1 (leer and Richard C. Lealcc. The letter l), generally indicates a simplified form of equipment. at the train despatehers other! for operating the four groups of contacts of the by the respective arms 7. as determined by the riding of the respective arm rollers 5. (S. into and out of the Wheel notch 4. The answer wheel has a series of peripheral teeth some of which are cut away at L00 ends, and the full length and shorter teeth may be relatively arranged to provide for closing by the long teeth aseries of eleu tric circuits causing distinctive code clieks or sounds at the train despetohefls tele phone. 'As shown the answer wheel l when rotated once clorkwise will assure three distinctive series of three-two clicks, and when rotated once connterrlockwise Wili as sure three distinctive series of reverse order two-three" clicks at the telephone. As the answer wheel rotates, its series of long teeth depress an insulating roller 14, carried by a ooniluutive arm 15, fulcrmnecl to Hi hind ing ost Hi. The arm 15 carries a hemiplate 17. having contacts 18, 19, and an in suluting roller 20. To respective binding posts 21. 22, 23 24, are secured elastic eontart plates 25, 26, 27 28, respectively carry ing, contacts 29, 30, 31, 32. the arm 15 and its plate 17', are together (iQPIQESBLl by the longer teeth of the answer-wheel l. the three opposed pairs of contaris la -53!), l930, 3l-32, are respertively closed to tziblish certain hereinafter named telephone circuits. and as each lung tooth 33, passes: beyond the roller 14 the contact arm 15, and contact plates 25, 26, 27, 28, resume normal positions against. stops 34 and then the three pairs of (untzuts are separated to break sniil circuits. The short terth 35 of the said answer-wheel I, pass the roller 14 without circuit closing effect.

he answer wheel is rotated directly by two pawls 36, 37, which engage the teeth 3 35 thereon. and are pivoted to the upright arm 38, of an alri'uaiture 39, the opposite ends of which oppose the poles J9, 4-1 of two ungrnets having respective wire windings or mils 42. 43. This armature 2.) norinziily re stored by :i suitable means (not shown) to the neutral or intermediate position shown in the (lIflWiIl Q. On a shaft 44, is fixed a min f-rrl nrnm'turv 4-5. the narrows upper rnil of Whirh is zztii'zu-leli in riilzer enrrgizwi mug lie! pole i i l. Shaft ii. aim: iiifflll 'llll'itr an arm iii. the head of Whirl; is iifiilglt? in strike eithrr one of two resiliwit roman-is 4-1. 43, and momentarily separate them from rrluiiwlv fixed runiamis 43h Mi.

l)urin; ('lorlnviso lninliiml of the answer wheel 1, he magnet 4i) 7 7 7 42, is energized and swings rontrol armature 45 in ilireriion of arrow .1. until the hoiul 46, on the armature shaft 44, moves uontart 47. from ronieci' 4f iherelrv momentarily breaking the magnet on rgrizing virruif which permits parts -15, 4G. by gravity llflfli by the rrsilirury of contort 4?. to resume their normal or central position and thus remake this oil-("nit whirl) again is likewise broken. and so on intermittently until the answer wheel (nrrating circuit is finally broken 5 and-when the Wheel is turned @untenolookwise the other mag- :inil 'giermit remijnsinieni of gmr s l i i. to

their normal or ventral s in rvnmlce his cirrnit. i'Im-rgizing r-iilier nuignvi; at U iL'iS nli'nubure iii-5 in and art sans; the penis 36 3? Lo rotate lhe :n'nuwr wheel 1 in opposite ilireriion, for inn-poses herrinu'l'ier more fully ilesrrsheii. During :rlw iiWiSi ro lilhlOll oi the answer \i'hrrl lwi'li roman-ls 12 13, engage center-i. ll. for mus! of the time but .12, alone is g 1 ire 'wliiiv ll, in inert, and during; Connie. eiociuvisr rutui'imi of the answer Wlllfl'l the vnnuirts 11 3 1% iiliewiso engage central roniurt 11. but now 13, alone active while 12, is inert,

The polarized selector relay i, in'i'l'erably phirwl at a lorul station, and i'onlpi'ises two pule-pieres 24 5:3. respei'""ely halving surrounding ire veils 54, 5:2v A pivoted armature is seirri iveljr Zlhillliijifiii by either pole Iiifl :33. and is hehl in its NifiQLtAi posh time, by the iii-Lion (if the fJCl'IIlIllllHli nuignet {not shown). and as shown has is stem u iiipii-ii L0 angfugv either oi Em; Want-acts, 5T,

The seirrior ll :oingnise: two magnets s jaeutii'el v having wire e'flils 35?. PM fiiliiwftlli in series :15 one owl lay .3 Wire iii: and sonnerml at their other nulls to hereinafter nnmeil rirruit win-s. The ilrlnil mnstrur {ion :uul operation oi he srli-etor shown in The luieul No lJE JZ'IL granted to in rderreil to, un l for :1 i'lezir understanding of this inveniion it is Slillfiii'ii in know em the sslvrixor ll may he :m'li rolled by ihe ruin ilesputrhrr to Innvethe imlton Hf; down agaiusl any one of four groups of rentus s rrspe-eiivei marked ii I L H T. 3 H. The ll L ifcailiztct group igUil'liH'lSBS three resilient fingers iii, 553113. ihe mm: M. lining Imrnmliy si-pzirutrii from fingers (15L Hi1 hut engaging both when operate-:5. 'l he t' it mam lflll illliw b' iili'iir ii including :i linger UT, wine-ii nurninlly vngngrs :1 second linger (i3. hui is sepumtwi from a E liil'il ling-{e uni-l when operziteil the lingers i. ifQ-L are 8911:.iiuiril and the finfg'm's 6?. (ill. :iru engaged. The H 'l ermine! group likewise min mises tlniu lingers Til. ii T2, the one Th, normally engaging linger TL while sepzirui-eil roux finger T12 mul when operated the fingers H), Tl. ore srj'mrutwl .Hlll he fing rs TI 72, are vn rngwl The f)" h? r-oninrt group lliiili'il'i ii ilirre; rcsilieui lingers 2'5 T4, th s our 1'3, being nrwnmlly separated from lingers Ti, 75. inst engaging both when operated Each contort group of each selector 1) is operative only by u vermin combination of positive soul negative impulses sent through the coils 5f} 65:, and these impulse combinations differ gm Hill for the different selectors used to make or break certain electric circuits at different local stations or places along it railway line. The selector contacts (34 to 75, 3-36 connected to hereinafter named circuit wires.

The illustrated train despathefis equipment E, comprises a pole-changer having two pivoted switches i677, coupled for movement together and adjustable to three contacts 78, 79, 80. A wire 81, connects con tact 75), with the negative pole of a battery 82. the positive pole of which is connected by wire 83, to the contact 80, and a wire 84, connects the contact 78, with the wire 83. The fulcrum of switch 76, connects by a wire 85, with the tele hone line wire 86, and the other line wire 8 is connected by a, wire 88, to the telegraphers key 89, making and breaking circult at a contact 90, which is connected by wire 91, with the fulcrum of switch 77. The telephone receiver92, is connected in bridge by Wires 93, 94, to the respective wires 85, 88, in which are interposed impedance coils or devices 95, 96. subduin'g or minimizing at the receiver 92, the click sounds of the key 89, thereby avoiding disagreeable knocking at the train despatchers our. \Vhen the switches 76-77, are adjusted to the left hand as shown, electric impulses of one polarity may be impressed upon line wires 86, 87., from battery 82, by operating the key 89, and when the switches are adjusted to the right hand, impulses of opposite polarity thus may be impressed upon the telephone line. It will he remembered that like reverse impulses are autonnitically impressed upon the telephone line when the despatcher operates calling kevs such as shown in above named Patent No. 1,105,766. 7

The track relay M, comprises a wire coil 97, having opposite ends connecting by respective wires 98, 99, with the respective rails 100, 101, of the track section G, and these rails are in circuit by wires 102, 103, with opposite poles of the track section euergrizinghattery 104. Relav 31, has one armature 105, which may he attracted by the energized relay coil 97, to a front contact IUG, from which it falls when the coil is deenergized. The O S relay N, comprises a Wire coil 107, and five contact fingers, conveniently termed armaturcs 108, 109, 110, 111, 112. When coil 107 is energized all live armatures are lifted, but only two. or 108, lit), respectively engage front contacts T13, 11%, and when coil 107, is dei ncrgized all live armatures gravitally drop and then four, or 109. 110, 111, N2. reslwctively ongug'e hack (Ollttlt'tS 115, llfi, 117, 118. The signal relay compriscs a (Oll H9, and live 'contact fingers, conveniently termed urinaturcs 120, 121, 122, 123, 124. \Vhen coil 115), is energized all five armatures are lifted and three or 120(121, 123, respectively on- ;gugo front contacts 125. 12o. 127, and when (oil H9. is dci uel'glzml all five :n-nndun-s drop and then three, or 1:31 1: 1. til, on-

gngg e respective hark conta ts li I31 mo.

The signal L is shown couple-d l a rod l$ll to a circuit breaker 13:3 fin'i-runn-d at lll2l so as to electrically connect with either of two contacts lill, lllfi.

hrict' prcliniiuunv schedule ol' tin eight ecu employed and hereinafter Hun-rd ch-ctrio circuits is given as follows:

lst. 'lhrough operated ll 1 contacts loihc coil llil. pit-king up arnniturcs of signal relay l).

2nd. Stick-up through coil llfh for signal relay 0.

3rd. llnergizes signal motor and moves signal from horizontal to Vertical position.

lth, llnor gizcs 2lllH\Vtl'-ll2lll( xnngnot roll and turns the answer wheel one tonil) or stop clockwise.

5th. Operates through answer hark arm 7, and rotates the answer wheel clockwis until roller 5 dr ps into notch l,

lith. Includes sele tor rcl:\ armature M3, and conta t 57 and causes continuous clot-k Wise rotul ion of he ansucnwlm-l 7th. Through operated H '1 contacts and stops clockwise rotation of the answer Wltt't'k hth. Through operated ll (niliitilH nnd hrenks 2nd stick circuit and turns tlll. an wer whet-l one tooth ciiuntcr-rlockwisc.

9th. ()peratcs through unsu'cnlnu-lcj urn: and rotates theanswcr wheel countcrwlorkwise until roller 6 drops into the notch -l.

30th. Includes selector relay arnmtinr it) and contact 5% and causes continuous court tcr-cloi-ltwise rotation of the unswenwln'vl.

11th Through operated F "l contacts and stops counterslockwise rotation of the unswer wheel.

12th. Through operated (l 5 contacts and energizes 0 t relay N for sullin it to later 'ussuro report of train arrival at lluch section G.

13th. Slick-up throu h coil 1H7, for the 1') S rcluv N.

14th. ()perates the answer wheel uln' ioolh or step clockwise when (l H contacts are closed.

15th. (lperntos tin-(nigh ansucr-luu-k roil 42, to continue clockwise turning of the an swer wheel for twothirds of :1 rcvolul ion to attest setting of (l S i'clny N.

ititli. (hit-rates: through selector rclav coil 5, to shift soles-tor rolu nrinuturo it}, to contact i to later rouse continuous coun t I=I- 'ln('l\' .\'i%l solution ol' the answer wln-ol for attesting trzein arrival at truck sl llull til 17th. lrinaio'y indu tion coil unsnvr luult atte circuit.

18th. secondary induction coil answerhack attest circuit.

pe'miiinn,

tin-eei 110m pnsiiiw lmilery 1, wires 136. 1 -7, upi-rzitml 11 1 mmlm'w 1'34. (25. Wires 1158, 139, mil 1151, U1 signal relay U. wire 11-1). airma- 1mm 111.). 01' |11.-Um-1; 'izmi (1 S relay N, lam-k (-(mtzu-t 1'15. m1 wiree 1 11, 1113. 11 1M) negu tive lmiti'ry P, The

is from positive 1121111 1) 1, wires 1313, 137, 1-11. nurmully vlusml 1 I. mmtncm (3T, 68, \x'ire 115, from P1111111 25. armature 1:21 01' energize-s1 signal relay 1), wires 141'. 139. mil 119.n1'r:=1ny 1). wire 1111, mznutim: 1111 mi ilei nezgizee'i 3 f"? rein; N.('1H)til1'1, 115. 11111 wires .41, 1&2. 1155. in negative battery 1.

The

i l'mm 1;-n: i1'i\'1= buttery 1, wires 136, 123?, 117. from centu'u t zu'zmiture 121. 01

energized eligjll i re-lujv' wire 11 meter (If 25m, isi. 1-12,, 11-21,

signal 1.. :incl wires 155 is 111m) iuwiiiix'tliniie-ry 1'. wires 0111 11111 11 11 1 rumzu'is T1. (1 W111? 152, 1)'.L('l( mmzlllara- 113.

mmlw-t 11*, n1 ilei i'zel'gizeil 1) .1.11 1\'. mix-s 1525. 113-1, answer-back (mil 1;. win. 15.). zuumture 111). 0'1 relay N. inn-l; minim-1 1111. win- 156, post. 135, IHUYlfil rim-nit breaker 1-62. and wires 157, 1:311, 1:31. 1-12, 11 5. 10 negative battery P. The

1 17171 ('iifliif is from msitive battery 1, Wires 1 1 13?. 1:33, eontnvts 11. 112, :11111 T. ms-1t 9. Wires 151i. 160, resilient cunhu't 17. contact 49, wires 161.. 154, answer-1:111:11 (-011 4:2. wire 15.3, arniuttire 111), of ilvi nergizeil U S relay )5, back contact 116. W111? 156. pest 135, IIhH'P-(l signal circuit breaker 13:5, and wires 157,

150, 151, 14:2, 143. to negative battery P. The

Sixth circuit is from positive battery P, wires 136, 137, .11 evfmrtor relay armature 56. centuct 57, \VH'lfirl 163, 161), and thence as in. fifth cir- (1:11, through resilient (-ontact 17, Contact '19, wires 161, 154, answer-bud; coil .12, Wire 1.1.3. :irimtnre 110 of (lei' nergized O S relay N. in'ivli mutant 116, wire 156, post 135, mime-.11 signal circuit breaker 132, and Wires 1:57, 1:3 151, 142, 113, to negative battery P.

is 11mm posilixe battery P, wires 136, 137, 164,, epumted S '1 cnntacts 7'0. 72, Wire 165, front ("unmet 127, of energized signal relay 1), :u'nmture 12 of relay 0, wires 166, 167, selector relay coil 55, and wires 161i, 143, to

negative battery P. The

Eighth circuit 1 is from positive battery :1, Wires 136, 13?, 1-511, hperated C L mntacts 6T, 69, wires 169, 170, anmver-bacl; coil -13, wire 171. back 0011- inrt. 11?. :lrnmtlire 111. of (lei nergizerl 0 S relay N, wire 172. post 13-1, returned signal nirimit breaker 132, and wires 157, 150, 151, 112, 14- 3. to negative battery I. The

11 212115 eimuit is 1mm llUhltlYi' battery P, wires 136, 137, 15H. wntacts 11, 13, arm 8, post 10, Wire 1T3. resilient emit-ac. 48, contact 50, Wires 171. 1TH. answer-back coil 43, Wire 171, back vunlzu't 117. armature 111, of deiinergized 1 101213, N. wire 172, post 134, returned .jignui (irmait breaker 132, and Wires 157, 151 151, 142, 1:13, to negative battery P. The

Tenth circuit is 1mm pesitive battery P, wires 136, 137, 162, selector relay armature 56, Contact 58, Wire 115. post 10, 111111 thence as in ninth rirruil'. through wire 1T3, resilient Contact 41 mntm-i 5U. wires 171, 176, answer-back cell 13, wire 111, back enntart 117, armature 111. 411 ilei ner'g'izml U S relay N, wire 172, post 134, returned signal circuit breaker 132, and wires 157, 150. 151, 112, 143, to

negative battery P. The

Eleventh circuit ,rom positive battery P, Wires 136, 137, 164, operated S T contacts 70, 72, wire 165, [rm-k contact 123, armature 122, 01' 118151101- gizwi signal relay 0, Wire 201. selector relay (will 51, and wires 168, 143, to negative battery P. The

Twelfth circuit is from positive battery P, wires 136, 137, 176, operated O S contacts 7 5, wires 177,

166, armature 123, of de'nergized signal relay (7), back contact 129, of relay 1), wire 17 armature 105, of energized track relay M, front contact 106, wire 179, coil 107, of O S relay N, and wires 180, 151, 142, 143, to negative battery. The

Thirteenth circuit is from positive battery I. wires 136, 137, 164, normally closed 5 T contacts 70, 71, wire 181, front contact 113, armature 108, of energized O S relay NQwircs 182, 1TH, armature 105, of energized track relay M, front contact 106, wire 179, coil 107, of energized O S relay N, and wires 180, 151, 142, 143, to negative, battery P, The

i is from positire battery P, wires 136, 137,

176, operated O S contacts 73, 74, wire 183, back contact 130, armature 124. of deenergized signal relay 0, wires 184, 153, 154,

answer-back coil 42, wire 155, armature 1.10, of energized O S relay 1, front contact 114, and wires 141, 142, 143, to negative battery P. The i Fifteenth circuit is from jhsitive battery P, wires 136, 137, 158, contacts 11, 12, arm 7, post 9, wires 159, 160, resilient contact 47, contact 49, wires 161, 154, answer-back coil 42, wire 155, armature 110, of energized O S relay N, front contact 114, and wires 141, 142, 143, to negative battery P. The

Sic-teem! circuit is from positive battery P, wires 136, 137, 176, operated O S contacts 73, 75, wires 177, 167, selector relay coil 55, and wires 168, 143, to negative batter P.

There are two additional circuits directly assuring the answer back attests at the train despatchers telephone and including a Secenteeth circuit which is included in an Eight een th circuit induced by making, and breaking; the seventeenth circuit and traced from the secondary winding 189, of the induction coil through wire 187, post 22:-plate 26, contacts 30, 19, headplate 17, arm 15, its fulcrum post 16,

telephone line wire 86, and thence by wires L92, 1923. to post 24, plate 28, contacts 32, 31, plate 27, post 23, wire 194, condenser 195, and wire 196, back to the secondary in durtion coil 189.

The sele tor oil circuit wires 197, 198, are respectively connected to the answer-back line win-s 19o, 193, at points behind a lightning arrester 1951, grounded at 200. Can rent thus is taken from the telephone line wires S6, 87, for energizing the selector armature operating coils 59, 60, for actuating the four groups ll 1, C L, Q T, 0 S, of selector contacts. When the train despateher operates the switch 7778, and telcgra phers key R9, or equivalent calling keys. he impresses like positive and negative impulses upon the selectors l), at all distant stations of a railway line but the selector at only one station at which he desires to actuate a signal, or i 'om which he wishes an O S of a particular gassing train. will respond and close a circuit through the corresponding selector contact group to assure the desired operative result. The insulation at the ends of track sections G, H, I, is indicated by the numeral 202. i Should the train despatcl'ier at a central or terminal station wish to set the distant horizontally adjusted signal L. to vertical position, and assuming that both the O S relay N, and signal relay 0, are normally decnerg'izcd, the dcspatcher will. by the key and switch devices E, or by an equivalent calling key, impress on the telephone line F,

the electric impulses necessary 'to briefly actuate the H l. contact group of the selector I), at the desired distant track section G, thereby closing the aforesaid firsb electric circuit which by passing through the coil 119, of the signal relay 0,

energizes this relay and lifts its armatures to opposed front contacts thereby closing the aforesaid second circuit which sticks up the armatures notwithstanding automatic opening of? the H 1 contacts which remain closed for but a few seconds. The'third circuit made simultaneously with the first and se 'ond circuits, passes through the signal m0- tor and moves the signal from horizontal to vertical position, thereby causing rod 131, to

swing signal circuit breaker 132, from contact 134, to contact 135, thereby making the aforesaid fourth, fifth and sixth circuits.

. The fourth circuit by energizing the answerback magnet coil 42, turns the answer wheel 1. one tooth or step clockwise in direction of arrow r, by the pawl 36, and then locks the answer wheel 1 until after the H I contarts open so as to delay the transmission of the answcnback impulses until after the 6 ins 5,055

i-lsnrcil r1 pon liar o'mtm'its H. I, in orrlsr that thrni rlmngc in the line cir unit, occurring ,i'h u the ll 1 mutants are opcnt-il. will not fillli with the answer- 5 back impulsos (uni rousironlusion. The

th circuit rims-v iootiriuous l-lockwisc r0- tntion of tho uh sl. ilicrvby musing its teeth scrim 33. to iutrrniiiirntly e-losu the subjurrnt iliill'h oi Wil'ljl'i i if) ill), ill--32,

to unikn :hs i runtccnth and thus llh'lllh continrr 'lll'ii sounds at the hi informing the nal l for truck sow viorizontul to vertitlirel t'ivtf click ll: i 'l-l3illl hrs 'lcspol hcr tho l5 lion i hos moroii in mi position. ll'lnh. sticst if; rival-l unlci toot: the lcspatchcr stops ii i slow i loricwisc rotation of tho sow-iwhwl. which he: ions by ammgc :irl or so wguivzilcnt selector ilion ll Us: to T group of "on arm of srlcrlor i ihr te-niporurlly will? sixth cirruil' furthsr until tho roll colors iii;-

l 'l lkllYllljf lllr: ii

2 r whcci clockwise on the active contact 12, unt l: l. and thus separates 1:. i l fl'rlii tl c filth circuit to '31P? lll 'il.

or 2: surcrcrling train amt-ion wish lo obtain it or of iuorcmcnt of signal ill} may do this by 1. oi the H 1 conibc fourth unrl romtr the answer 'HiflVlSt (llIEt'l ion by the ningnrt coil 'll'l lYi and contact is the sclcrior prr-yiously bccn lit away from conthrough :36 57. is riore cannot urge post tho rollcr 5 rs (Ly arniuturv 5E; mowl by tho ii-nth tact 5T. thrsixth no not Pstulilishwi :oul til-er tho unsvwr whorl not-is -l.

:il'tcr the rollrr rulers ihc notch. Consent purpose. the :mflo' only one complete un lrr inliucnre of the fifth circuit our? will rshsn the roller 5, enters the whorl no ibis one i-locks rsvolution oi" whet-l 1. gives tlircc vcrir tiarcs't'wo' -llclr answer ba k sttcsts sf ille telephone 32; to reurn the train lcspatrhcr that tho signal ll is correctly set all vcrtir-nl position. l one triple vnrifyin rltfAESil be insurii rt. the H I contacts 7 to likewise cause in lotion of the answer mother triple veri- EFi l luuilr ail-72st at so oucully. for rvri l'yii swcr Whrol will cloz'kwisc rsroiui' he tslephonc. These verifying attests are obtainable independently of operationpf the signal, which meanwhile had not changed its D, thereby separating or opening the nor innlly closed U L contacts 67, 68, through which the existing second or stickcircuit for the armaturcs of signal relay 0 is made, and thus causing separation of armature 1220 from front contact 1255, thereby delinergizing signal relay 0, and allowin all. of its'nrmatures to (lrop. The fall 0 armature 121, from front contact 126, breaks the third signal motor operating circuit which is holding the signal L, atycrticnl position, oml us the signal is nmlongcr electrically so held, i{ gravitally f alls to the illustrated horizontal position and in so doing moves signal circuit breaker 132, from contact 135, to its contact 134. The ninth and tenth circuits are now established, the armature 56 of the selector relay C being now in the rlottvil line position and causes continuous cminter-clockwise rotation of the answer when] 1., in direction of arrow 1. This r0- lotion of the answer wheel 1 cnuscs its teeth 3:3, to intermittently closc the subjacent remake the aforesaid scvcntcenth and eighteenth circuits and assure continuous series of rc'cc'rsis order two-Hirer clicks at the despair-liens tclnphone 92. which tells the z'lrspsirlicr that the distant signal L, for trawl; section G, has IGtlllDCll to the desired normal horizontal position. lVhen this hm-threes click attest is fully understood; 106

the tlESPfltCllQI' stops it by stopping counterclockwise rotation of the answebwheel, which he does by actuating the key and switch devices E, or an equivalent calling key, to cuuse operation of the S T selector contacts thereby making the hcreinabove named clcvnth circuit which, by energizing the selector relay coil 54, and returning its armature 56, to the COIlllf'Cl; 57, breliks the tenth circuit at the contact 58. When the tenth circuit is broken as aforesaid by shifb ing of armature 56, from contact 58, the ninth circuit through answex-back coil 43,

renminod active to further rotate the answer wheel counterclockwise until the roller 6, on the active contact 13, enters the wheel notch 4, and thus separates contacts 11, 13, to break the ninrh'circuit andstop the wheel and thus stop the two-three click attest of signal adjustment to horizontal position and all the hcreindescribcd mechanisms on parts thereof now have normal relative positions shown in the drawing.

- $hould the some or a succeeding train despatcher for any reason wish to obtain a, later verifying attest oi: return movement of the signal L, to horizontal position, he may do this by'sunply causing operation of the C L contacts, thereby again closing the eighth and ninth circuits to again rotate the answer wheel 1, in the some counter-cloclnvise clirection by intermittently energizing the magnet coil i3, and while contact 13, is active and contact 12, is inert at the post 11. As the selector relay armature 56, had previously been moved by the'eleventh circuit away from contact 58, the tenth circuit, through 56, 58, isnot established and therefore cannot or the answer wheel notch 4, past the roller and consequently, for Veritying attest pur ose the answer wheel will make but one in lcounter-clcckwise revolution under influencev of the ninth circuit and will stop when the roller 6, enters the wheel notch l. This one counter-clockwise revolution of wheel 1, ossures three verifying two-three click answer book attests at the telephone 92, to reassure the train doe patcher that the signal is in horizontal POSI- tion. If this one triple verifying attest he insullicient the G L contacts may again be actuated to likewise cause another triple two-three click attest at the telephone. These verifying attests of horizontal osition of the signal may he obtained wit out moving the signal to vertical position. The aforesaid eighth and ninth circuits causing counter-clockwise rotation of the answer wheel owning the original and verifying attests of adjustment of the signal from vertical to horizontal position, are made through the armature 111 and back contact 117, of the deiinergized S relay N, consequently neither of these attests can he ohteiriediinless the relay N be in normal delinergized condition, and the receipt of said attest or attests lay the train despatcher assures him that the O S relay N, is detiner zed and that the signal L, is at normal orizontsl position. v

Should the train despatcher wish on '0 S report of errivel of any particular train at distant track section G, he may obtain it by operating the key and switch devices I), or an equivalent culling key, to impress on the telephone line F, the electri impulses necessary to briefly actuate the O S Contact group of selector D, thereby assuring r'nckm of the aforesaid twelfth circuit.

The twelfti circuitby easing throu h coil' 107, ofthe 0 S relay energizes't is reluy and lifts its xii-matures 108, 110, to front contacts 1.13, 114, and the thirteenth circuit sticks npthe armatures after the O S contests 0 en, thereb ,'v setting rein N, to assure liiter O S report of arrival of the train at truck section G, and also closing the fourteenth andfiftoe'nth circuits, "At

the time the operation of conditioning the apparatus to give a report of the posing o a train, now being described, is commenced, the ports are ill the position shown in the drawin The closing of the O S contacts 73 end 75 establishes the sixteenth circuit which causes the miniature 56 to shit-t to its dotted line position. This preveutstheenewer wheel being rotated continuously clockwise but does not revent clockwise rotation of the answer w eel by the fifteenth circuit. The reason why the fifteenth circuit now may rotate the answer wheel clockwise is that this circuit does not pass through the selector relay armature 56, whichnow may remain at contact 58, with out interfering with operation of the fit teenth circuit which passes through and energizes answer-back magnet coil 42. The fourteenth circuit turns the answer wheel one tooth or step clockwise and then locks the wheel until after the O S contacts open, in order to avoid confusion of the answer book impulses, as explained hereinhefore. Since the roller 6, of contact 13, is within the wheel notch 4-, it requires only a twothirds clorlm'ise rotation of the wheel to carry its notch 4, around to where the roller 5. will enter it and thus separate contacts 11, 12, to break the fifteenth circuit and thus automatically stop the wheel after it had turned clockwise for only two-thirds of a. revolution. During this movement the wheel teeth 33, actuated the threesuhjncent pairs of contacts to cause two distinctive three-tum answer beck clicks et the train clespetchers telephone 92, informing him that the O S relay N has been energized and the whole answer bo k mechanism properly placed in condition to report to the despatcher the arrival of the next train at truck section G. At any time hefore such train arrival the some or a succeeiling train despetcher may obtain one or more verifying attests of the norcsnid setting of role? N, by simply causing operation of the 0 S selector (muta ts thereby again closing the aforesaid fourteenth and fifteenth circuits to again energize cnswenbsck coil 42- and turn the answer wheel cl clrwise. As the roller Sis in the wheel no ch 4:, when the answer wh eel starts, the, answer wheel will moire one comple e clockwise revolution an will autom tically stop when the roller 5. next enters t e notch to separate contacts 11. 12. Duriuotsuch wheel rotation its teeth 33. actuate the three sub incent pairs of contacts to assu e three distinctive three-two answer buck clicks at the telephone 92, thereby reassuring the train (lesmstcher that the 5 relay N, is properly set to report to him the arrival of the next. train at track section G. Tf this one triple verifying attest be insufficient he may obtain another like attest by again causing operation of the O 5 contacts. aforesaid fourteenth circuit having been made through the answer back coil 42, and the buck contact '130, and dropped armature 124, of deinor ized signal relay 0, it is obvious that vcri yin attests of setting of theO ti relay N could not have been received by the train despatcher unless the si :11 relay 0, wasdeiinergized and the si ns. L, wasat normal horizontal position. lien the first )ass' train arrives at track section G, 1e tr e: circuit through battery 104, and the coil 97. of track relay M, is short-circuited through the track rails and the car wheels and axles to an extent permitting the armature 105, of relay M, to

avitally drop from its front contact 106.

he dropping of track relay armature 105, from contact 106, breaks the existing thirtecnth stick circuit and therefore the armstures of the now denergized O S relay N, gravitally drop. The simultaneous dropping of all urmatures 108 to 112, of deenergized O S relay N, establishes the ninth and tenth circuits which also pass through the contact 184, and the si a1 circuit breaker 132, when the signal is in the illustrated normal horizontal osition. It will be remembered that the a resaid sixteenth circuit made by operating the O S contacts energized the selector relay coil 55, thus shifting the selector relayarmature 56, to the contact 58. It thereforefollows that when the O S relay N, is denergized by urrival of the train on track section G, and the cforesaidninth and tenth circuits are thereby established the answer wheel 1, will be continuously rotated counter-clockwise, and will actuate the threesubjacent pairs of contactsto assure a continuous series of twothree answer back clicks at the train despatchers telephone 92, advising him of the arrival of. the train at distant track section G. When the attest is fully understood the despatcher stops itby actuating the key and switch devices F. or an uivalent selector key, to establish the eleventh circuit und cause operation of the S T contact group thereby shifting selector relay armature 56, from contact 58, to contact 57, and breaking the existing tenth circuit at 56, 58, and leaving the ninth circuit acti$e to further rotate the answer wheel counter-clockwise until the roller 6 enters the wheel notch 4, and separates contacts 11, 13, to break the ninth circuit. After the arrived train leaves track section G. and the track relav M. again is energized by track battery 104, all the mechanisms and parts thereof again have relative normal positions shown in the drawings. As the ninth and tenth circuits pass through the contact 134-, and the signal circuit breaker 132, it is obvious that the two-three click attest of train arrival at track section G, cannot be obtained by the newness train despatcher unless the signal be at now mal horizontal adjustment.

If in using the hcreindcscribcd invention the train despatcbcr after having set the O S relay N, to assure report tohim of train arrival at track section G. wishes to annul said releq setting and thus allow the train to arrive at said truck section and proceed without reporting to him, he may assure such annulment by actuating! the key and switch devices E, or an er uivulent caliing key, to cause operation of t 1c S T grou of selector contacts. Operation of the S contacts establishes the aforesaid eleventh circuit which shifts the selector relay armature 56, against the contact 57, thereby preventin continuous counter-clockwise rotation 0 answer wheel 1.. Operatingthe S T contacts separates fingers 70, 71, therein breaking said thirteenth circuit and del nerg izing the relay Ni and its unnaturcs therefore drop, and armature 111. engages buck contact 117, thus establishing the aforesaid ninth circuit which energizes an swer-back coil *3. and. thus assures counterclockwise t-urning of the answer wheel. As the roller 5 now rests in the answer wheel notch 4, the ninth circuit passing through contacts 11, 13. will turn the answer wheel 1, counter-clockwise for only two-thirds of a revolution and still stop when the roller 6 enters the wheel notch 4e. and opens contacts 11, 13. to break said ninth circuit. This two-thirds counterlockwise revolntion of the answer wheel will, through the th roe subjacent pairs of contacts, assu e two distinctive two-three clicks at the train rlespatcbers telephone 92, attesting that the prior setting of the O S relay N, has been annulled by operation of the S '1 contacts.

Although I have particularly described the construction of one physical emborliment of my invention, and explained the operation and principle thereof: nevertheless, I desire to have it understood that the form sele ted is merely illustrative, but does not exhaust the possible physical cmbodiments of the idea of means underlying my invention.

What I claim as new and desire to secure by Letters Patent of the United Fltntos is:

1. In a signaling system for railroads, a combination of a central station and a wax station: a signal sending mechanism adapted to transmit signals to the central station: a signal associated with a way station for exhibiting different aspects to passing, trains; a device responsive to the presence of a train on a portion of the truck ad'iucont to the way station; and means controlled from a central station for causing said signal sending mechanism to be selectively subject to control by said signal or said device.

2. In a signaling system for railroads, n.

combination of a central station and a was station a signal sending mechanism adapted to transmit signals to the central station; a signal-associated with a way station for exhibiting (lifi'erentaspents to passing trains Emil mntrolleil from the central station; (leViC'Q rPsponsivs to tin pisssnno of s trz on a portion of he tun-l; adjacent so Way station; aml nwsns selectively i trolled from :1 central intion for ';i5.li!l said signal sslnling Tiltil'lllilihill into conti iion. to he miton'mtisnll g vontrolled h; F-Qilii last mentioned device.

' 3. In a signnlin system for railroads =1.

combination of a central station mnl s s station: a signal sending Insclianism inlsplniil 5 station 2-:1 signal sending inet'lmnisin a to transmit signals to tho osi'ltral station; 21 signal associates] with :1 Way station for hilaiting elitlnwnl: aspests to passing; trains and uontrollm'l from tho ssnti'nl station; n ilerivs rns nslw to tin: prvsvn'se of a. train on n portion of the track :nijacnnt to tlis my station: (n-n controlled from n (911" trail station for musing sni l signal S'lltlillgl mechanism to lie selectively slihievt to (on trol by snid isviss to I'QSPOTHl to the pressure of a train on aid portion of trash in tr mittin; :1 continuous \llfliflCilWilFiii" m nnl to the c ntml station; ninl mm: trollsd from sziiil vsnirsl station for sin tho ontinnons opsrntion of fiillil signal in" nn'chnnisni.

4. in signaling system for rail" finilil lfiflti'filk of a ventral stslcion an to transmit signals to the central station signal associated with a way station or llll/lljilig different aspects to passing: trains anal vontrollswl from the ('Qfiilfil stmimi: s de ice rssponsire to the presume of n i on a portion f tlw {molt mlinw u to ton n station; means si-lvvtlvoly \filnllllllt ll fr m central station for pinning the signal malllog mechanism in condition to ba' sinton'mlisally controllmi or said ilovie to ll llllill'lil 11 (ha rastnristis nods signal in "he (Gili'l'ail sl'w tion 1 and means nontrollsd from sniii won-n. station for unifying: said injintlition.

5. In :1 signaling system lor railroads comliinntioi'i of a ventral stn i'on anal a W: station: il c lgllllil sending ll'lifihllillfiii11gilfil? to transmit signals to the central station signal associated with n as simian for w:- hihiting dillert-nt nsperts to passing trains: muons zns iosinlwl with tho waif; lliifiii noel adapted in report to tho mintral slnlion l npassage oils; train o es a portion of tho 1 mil; alljzicent {it l-ills way station; and moans ia filectively nntroiled from .a central sintion for planing Sfii'il signal sending mechanism in rmnlinios tn be automatically controllnil by the opeinition of said. signal to transmit nkzlmrasteristio node signal to the central sllition; Sign} means controlled from the cen- 5 different. aspeots to passing trains; misptml to be sslectiwl controlled 1 the entral station and pinned in corn mi; in lllllSB operation of the signal sendlilfikIilSln upon passage of :1 trnin over Hm of the track adjacent to the way means controlled from a ventral n for causing said signal F filhilll'ifi :nisin to be selectively suhjent in non: T 511s operation of said signal and to to the ventral station a continuous nnl of a distinctive charntter n f'u1"(lio'lli' aspect exliiliitsrl: nml IIWIlIlS von om the central station for stopping ntinnous operation of said signal Sillllz'inznisln.

in :1 signaling system for railroads a -:-i nil inaiion ol' :1 (:Pntrnl station and a way 'innal sending mechanism adapted A: signals to the central simian; i "unwind to be sslertivsly sontrollwl z ilw (Hilliii station nml plnz-oil in mn- 1 muss operation of the signal senilnmism. upon passage. of a train over li n of the track adjacent to the Way :1 signal nssocintml with tho way sizil having a normal lllfiSftl position sn operated position for exhihiting Illfwant aspects to passing trains: moan-s svleo vi} Iffiii'lill'llllfill from a central stsiion for mining: said signal to he moved from its nu nml hissed position to its opurntml post ri n: menus mntrolled by saiil signal in said ngwz'v'iivil position for causing said signal Silllll ,5 mevhanism to transmitto the C911 nion a continuous characteristic rode ii of the opvratsll condition of said ill; and means controlled loin fin: (19nion for stopping the Poniiinmius 1 :1 signaling system for milroadsn lion of :1 central station and a Way nnl assosinti-d with a Way stn lnliitinn different aspects to pass iins; a (levies rvsponsivo to the prosn train on n portion of tho trawl; ml ix. the way station; means vonlrollml awnirnl station for solsvtivsly consiilicr said signal on snill (ls-rive: Hill sending); mechanism iulnptml t signals to the ventral station Elllll ivoly subject to control by said signal i=1 (lesion. 5 in 1 signaling system for railroads a ii' iil lilill lfin of a central station and a way ststznn: 3 signal sending mechanism adapted,

s nssociaiml with a way station for ex-- to transmit signals to the central station; means associated with the way station and adapted to report to the central station the passage of a train over a portion of the track adjacent to the way station; a signal assoei atod with the way station and having a normal biased position and an operated position for exhibiting different aspects to passing trains; means selectively controlled from a central station for causing said signal to he moved from its normal biased position to its operated position; means controlled by signal in said operated position for causing said signal sending mechanism to transmit to the central station a continuous clnu'acteristic code signal of the operated,

condition of said signal; means controlled from a central station for stopping said continuous operation of said signal sending mechanism; and means operated automatically for causing said signal sending mecha nisni to transmit to the central station a continuous code signal of a distinctive character from said last mentioned code signal, when said signal is operated abnormally. H0. in a signaling system for railroads, a combination of a central station and a way station a signal sending mechanism adapted to transmit signals to the central station; means associated with. the way station and adapted to report to the central station the passage of a train over a portion of the track adjacent to the Way station; a signal associated with the Way station and having a normal biased position and an operated position; means for selectively controlling said signal from a central station; means eftcctive in either of said positions of said signal or causing said signal sending mocha uisni to transmit code signals to the central station which are distinctive in character according to the position ofthe signal; and means for causing said code signals to he repeated later for the purpose of verifying the condition of said signal, said last mentioned code signal being of a distinctive series from said first mentioned code signals.

ll. In a signaling system for railroads, a comhination of a central station and a way station: a signal sending mechanism adapted to transmit signals to the central station: a signal associated with a way sta tion for exhibiting dill'erent aspects to pass ing trains and controlled from the central station: a device responsive to the presence oi a train on a portion of the track adja cent to the way station; means selectively controlled from a central station for placing said signal sendingmechanism into coin diti n to be automatically controlled by said last mentioned device: and other means sel ctively controlled from the central staion for rendering said he? mentioned means illefl f'hlvev 2 in a signaling system for railroads, a

stretch of traclv provid d with a plurality of insulated llzi ls. circuit sections: a central receiving station, a may slation adjacent to each of said track circuit sections; a line circuit extending from the receiving station to the several track circuit sections and way stations; a signal associated with each way station for cxhihiting diti'ercnt aspects to passing trains; a device at each way station which is responsive to the presence of a train on the adjacent track circuit section; a signal sending mechanism located at each way station and operable electrically to send a code signal over the line circuit to the receiving station which distinctive from the similar signals of all of the other mechanisms: and means controlled over the line circuit from the receiving station for caus ing the signal sending device to be selectively suhject to control by said signal or said train renonsivc device.

13 in a signaling system for railways, a stretch of track provided with a plurality of insulated track circuit sections; a central receiving station, a way station adjacent to each track circuit section, a line circuit extending from the receiving station tothe several track circuit sections and way stations, a signal associated with each way station for exhil iiting different aspects to passing trains, a device associated with each track circuit section IQSPUHHlVQ to the presence of a train on its corresponding section, a signal sending mechanism located at each way station and i opci ahle electrically to send a plurality of signals over the line circuit to the receiving station, which are dist inctive from each other and from the like signals of all the other mechanisms, means controlled over-the line circuit t1 om the recciving station for causing the signal sending mechanism to he selectively subject to control lrvsaid signal or said train responsive device: and n'ieans for automatically selecting the signal. to he sent over the line circuit to the receiving station according to the function performed.

1% ln a signaling system for railways, a comhination of a central station and a way station a signal sending mechanism adapted to transmit selectively a plurality of distinctive code signals to the central station; a signal associated with a way station for evhihiting different. aspects to a passing train: a device responsive to the presence of a train on a portion of track adjacent to the way station; means controlled from a central station for causing said signal sending mechanism to he selectively sulijeot to control by said signal or said train responsive device; and means for automatically selecting the particular code signaL to he transmitted to the central station ,acoording to the function performed.

15. In a. si ns-mg system for railroads,

ii-e take-siding saig'nai or the track relay,

Pifi 361;.

in :1 :Q-muiiug system fur railroads, a: i'nimn, a way station, an insulated aertinn with a; track rliiy ism-dated h the way station. a take-hiding signal 'Laizliulj with the way si atiun for exhibit iiifi'irent aspvcts in passing trains and maxi in be hQlPCiiVE-jff mummified from the ind. station, ansWewbac-k mevilanisni ;n? flu: way station for t'imsmiiting "EPiHRCiE signais to tha central stzitiim, means (rm'itrnlled from the flmtmi stnfur j rin'ving mid RSWiPhHuk Nihilzh Evin wiiruiitiisn in w seiiijevi m wnimi in: likr'v'l' fllfilii of said in 0 hiding; hi;-

lim trunk rriuy, Zt.-i)i tiYE-l'.

' 1 sign-(iii 893121 0r raiimzuis, a

ma sending nlohamiranl 31s in the can? th a way V v pe z-ts to m; 2 5mm the cm pvnsive in this prefix:

m (if $11M) mu m mmns wiec 1W mm the Cfliil'iil stat last mentioned 1? mm autmnaticnlly if signai Sending a; m comm] Stalk)?! in 5 1 11g V Etimtive nudv signal hi Mun. piumiity of way statimw, age of mid Kiwi 91 site? each Jig-l .-.i; m::l :xsmwmtmi with wu-h iii! been gwrlmzied. #5051 F0 vxhibiiing diiivrent nspmt; Hi. In H signalling system fin mini ii i sing lums and adapted tu bu (run cmubmution: a strebch of tT'fi-ii gun hi "5 mm the coiiiral station, minim uswith :1 pim'ality (if insulated i, wk m i. w th cum wig; -iatinn minpuw} in a! x'mtuiving i w H" iin mi in tram iii diAlil'ii-t'iw an Wiiiz Assim- MW and 3-: 0i! its norrssgmnii E i! war-huh; im' ifmi at m 1 iv: :5 in tmnamainude "mi in the m nim] Siiad at LiVi}. way iTF-iik 5mm {he minty-:1 am i t if miwsim $.97

' 3 if mmiiiui 5,;

liitw'i track seciion with ll Editl UMk relay acting tn dz 7 b7 1'Pi:1y,ami means mntrnlled \ifnilfill staiigin musing said ask mvvhaniz-im is be seler'iiiwiy m rzmii'i'oi by the: mm'emmifs of said sigmii 01' Ir-(10k zi-iay. re-

miing system fin" Hi i :5 Wm} rizii iuhi. it f 5 m! exiubiiing Liiflex-onf' khi' g trziizia and adapted ta n9 mm: A? the: iii-a] station. a truck ii i #215 in stud way siniimi, am? ii ii way station and wnirni 5mm for FfigH'Fl'i ins fiver mid trai'ric w-cii Ewiiy' aignaiing 325 35512 *1 H5410?! i2 Wu}: i:1{1m f its :2. the ruin" mm, a his. 5g Iv way station for s K in p' i335? suiuieri Fae-2r ravti cm with a trap suiriamii wiii; the: way statisi'i, :52!

uni

passage a7 1 U ing system for mih'omix, a Mail ii mini a iinv'circuit UH! 311v cenirni station in the :e iiiiii $i(iiilfj signal for exi'mii QSPH'tH in pmssing trains in bi cuniruilwi U'v'ki tiw line the 00mm 411M011. an S iaijvi with th s way tu1inn. means Em l if??? the iii circuit from .hP. ii 'f iifii sisn'timi for entrgizizig emit] U 5 lG- zmii n subjmrt t0 control by the Hum? EELS ziisni Lijiiiiiiilifl '0' transmit answeflback signals over the line virrnit to the rentral station, and means vontrolled from the ventral station for seleetively vansing said answer-hark inevhanism to he snhjevt to vontrol hy the nioven'ients of the take-siding signal or the travk relay, respevtively.

225, In a railway signaling system, a railroad travk provided with a plurality of in snlated track sevtions. a Central reveiving station, a way station assoeiated with tlltll travk sevtion. a line eirvnit extending from the reveiving station to the way stations. :1 take-siding signal assoviated with eavh way station for exhihiting ditlerent asperts to passing trains and adapted to he rontrolled over the line virvnit l'rom the ventral lt veiving station. a signal sending ilevire at eavh way station operahle eleetrivally to send a rode signal over the line virenit to the reveiving station whivh is distinetive from the signals transmitted liy all of the other derives, vontrol means for eavh signal sending devive, said vontrol means heing norn'ially responsive to the movements of the take-siding signal as it is eontrolleii from the ventral station, trainresponsive means rendered effective by the passage of a train over the eorresponding trark sevtion. and means selectively vontrolled over the line eirenit from the revolving station 5oz selectively plaving said vontrol means at the several way stations under the vontrol of the corresponding train-responsive means instead of its take-siding signal.

24. in a signaling system for railroads. a central station, a ,way station, an answerhavk mevhanism adapted to transmit answerhark signals to the ventral station. a takesiding signal associated with the way station for exhibiting different aspevts to passing trains and adapted to he controlled from the ventral station. an t) S relay assoeiateil with the way station, an insulated travk seetion with a travlt relay which acts to th energize the S relay. and means selevtively vontrolled from the ventral station for energizing said i) relay and to cause the an swer-havk mevhanism to he rlav'ed into eon-' dition to he autoniativally vontrolled hy said travk relay.

27 in a railway signaling system, a ventral reveiviilg station. a way station. a line virviiit extending from the, revolving station to the way station, a talcesiding signal assoviated with the way station lor exhiliiting different aspevts to passing trains. a si nal relay vontrolling said take-siding signa an t) S relay. an energizing virvnit for each relay eontrolled hy the other relay, means eontrolled over the line virvnit from the ventral station for selevtively controlling said energizing virvnits. an hsnlated track sevtion with a travk relay adapted to deiinergize the 0 S relay, and answer-back mechanism lovated at the waystation and seleetively suh ieet, to control by said S relay or said signal relay for transmitting answer-hack signals over the line eirenit to the ventral station. wherehy a report may he obtained at will at the ventral station of the positions of the takesiding signal or the passage of a train 2G. in a railway signaling system, a. central rez-eiving station, a way tation, a line virvnit extending from the reveiving station to the way station. a take'siding signal assoviateii with the way station for exhihiting diti'erent aspevts to passing trains, a signal relay vontrolling the take-siding signal, an. insulated travk seetion with a track relay assoviate l with the wayjtation, an H relay vontrolled hr the travk relay. said 0 S relay and said signal relay being Selectively energized from the ventral station, means for interim-hing the energizing eirviiits [or the U h relay and the signal relay, stivk cirvnits for said (l h relay and said signal re la sehi-rtively eontrolltal from the ventral station. an answenliavh nievhanisni lovated at the way station and selevtively subject to vontrol hy said (l h relay or said signal relay for trimsmitting answer-back signals over the line wires to the ventral station, whereby Conditions may he set up at the way station from the ventral station at will to report the positions of the take-siding signal or the travlc relay, respevtively, or said eonziiiinns van he vlianged after having been se op.

7.27, in a railway signaling system, a track prov ideil with a plurality of insulated track svvtions eavli having a trark relay. a signal sending derive associated with each travk sevtion. and means vontrolled from a ventral station for selevtively vontrolling said signal sending derives to place them respevtively in vondition to he vdntrolled hy the rot-responding travh relay. (tit'll s gnal sending device operating to send a distinvtive answer-havl signal to the central station npon lieing so eonditioned. and also to send another distinvtive answer-hark signal tothe ventral station when the track relay is shunted hy the vntranre of a train into the rot-responding travk sei' tion.

i in a railway signaling system, a central reveiving' station and a plurality of way stations, an insulated t-avk section located at earh way station and having a travk relay, =signal sending means at each way station adapted to transmit a distinctive code signal to the ventral station, vontrol means for 0V- erning the operation of each Signal Sen ing ineans, selectors at the way stations adapted to be selectively controlled from the central station, means vontrolled by the selector at each way station for changing the normal condition of the corresponding control 

